Excerpt from Essentials in Mechanical Drawing This brief treatment of the essentials of mechanical drawing is designed to give instruction in the rudiments of plan drawing as it occurs in everyday life, so that the student will be able to read and understand ordinary drawings and be able to do ordinary mechanical sketching. The book should be of value also to one who is about to take a longer course in drawing, for it aims to correct the com mon mistakes of the beginner. Where work is given without the regular instruments, it is Well to provide the students with small drawing boards about 12 X 18 inches in size, together with a T square. This equipment makes for more rapid and accurate work. The bottom edge of the drawing board can be planed square with the left side so that the T square may be used for both horizontal and vertical lines. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.